Here is the full list of all 20 Immersive Poetry achievements.
Complete the First level
Complete the Third Level
Complete the Fourth Level
Complete the Fifth Level
Complete the Sixth Level
Collect 5 Groups of Mushrooms
Find your Wife's Glasses
Investigate the Blue Object
Find the Music Box
See the Submarine
Enter the Correct Code
Leave your Journal Behind
Reset your Progress
Complete the Second Level
Enter the Gate with no Gate
Take a Photo with the In-Game Photo Mode
Collect 3 Poem Parchments
Collect 5 Poem Parchments
Collect all Poem Parchments